Information provisioning apparatus and information provisioning method
Information provisioning includes acquiring a data stream of content that is composed of a plurality of segments, and actual data of metadata that includes information related to the content and information related to the plurality of segments. The metadata is divided into metadata processing units (MPU) corresponding to segments subjected to processing in the plurality of segments. A capsulized stream is generated that includes packetized elementary stream (PES) packets acquired by packetizing the segments subjected to processing of the data stream and metadata PES packets acquired by packetizing at least one MPU, the metadata PES packets including control information of the metadata. The control information includes an overwrite_flag which indicates whether previous metadata is to be overwritten.
1. An information provisioning apparatus, comprising:
an acquirer that acquires a data stream of content that is composed of a plurality of segments, and actual data of metadata that includes information related to the content and information related to the plurality of segments;
a unitizer that divides the metadata into metadata processing units (MPU) corresponding to segments subjected to processing in the plurality of segments; and
a capsulizer that generates a capsulized stream that includes packetized elementary stream (PES) packets acquired by packetizing the segments subjected to processing of the data stream and metadata PES packets acquired by packetizing at least one MPU, the metadata PES packets including control information of the metadata,
wherein the control information includes an overwrite_flag that indicates whether previous metadata is to be overwritten.
2. The information provisioning apparatus according to claim 1 , wherein the control information of the metadata comprises at least one of a metadata type, a time synchronization flag, and a data length of the at least one MPU.
3. The information provisioning apparatus according to claim 1 , wherein the control information of the metadata comprises a metadata type, a time synchronization flag, a start time and a duration of audio/video (AV) data, and a data length of the at least one MPU.
4. The information provisioning apparatus according to claim 1 , wherein the actual data of the metadata comprises information related to the content and information related to one of a display method and a program.
5. An information provisioning method, comprising:
acquiring, by executing a set of instructions by a computer, a data stream of content composed of a plurality of segments, and actual data of metadata that includes information related to the content and information related to the plurality of segments;
dividing, by executing the set of instructions by the computer, the metadata, into metadata processing units (MPU) corresponding to segments subjected to processing in the plurality of segments; and
generating, by executing the set of instructions by the computer, a capsulized stream that includes packetized elementary stream (PES) packets acquired by packetizing the segments subjected to processing of the data stream and metadata PES packets acquired by packetizing at least one MPU, the metadata PES packets including control information of the metadata,
wherein the control information includes an overwrite_flag which indicates whether previous metadata is to be overwritten.
6. The information provisioning method according to claim 5 , wherein the control information of the metadata comprises at least one of a metadata type, a time synchronization flag, and a data length of the at least one MPU.
7. The information provisioning method according to claim 5 , wherein the control information of the metadata comprises a metadata type, a time synchronization flag, a start time and a duration of audio/video (AV) data, and a data length of the at least one MPU.
8. The information provisioning apparatus according to claim 1 , wherein the control information of the metadata comprises time synchronization information.
9. The information provisioning method according to claim 5 , wherein the control information of the metadata comprises time synchronization information.